Diversification: Why It Feels Wrong But Works Wonders (A Conversation)
Investment Series
Hey everyone, let's talk about diversification.
It's the financial advice everyone throws around, but nobody really prepares you for “how hard” it is to actually stick to it.
There's this quote by Brian Portnoy: "Diversifying means you always have to say I'm sorry."
Let's unpack that, because it's the key to understanding why diversification, despite the emotional rollercoaster, is a cornerstone of smart investing.
The "Sam" Scenario: FOMO is Real
Imagine this: You have a friend, let's call him Sam. Sam goes all-in on some hot "Quantum stock" in December.
It skyrockets! He's bragging, posting his wins, and maybe even saying things like, "Enjoy staying poor!"
Meanwhile, you're sitting there with your diversified, "safe" portfolio across multiple sectors (maybe even some bonds!).
Let's say the market bounces back, and in 2025, Sam's Quantum stock does a ridiculous 200% in a year! You?
You're at a measly 11%.
Ouch. Feels like you lost, right?
That's the emotional side of diversification. It's not glamorous in bull markets.
The Crash Is Coming: It's Not "If," It's "When"
But here's the thing: Markets are cyclical. They always drop eventually.
What happens when the market crashes and the index drops 50%?
Sam's Quantum stock is going to get hammered – maybe down 90%!
Your diversified portfolio?
Sure, you'll take a hit, but you're not going to lose 80% of your money.
Maybe you're down 30%. A lot easier to sleep at night, right?
Think of diversification as insurance. You have life insurance, car insurance, homeowner's insurance... Why not portfolio insurance?
Compromises: The Foundation of Diversification
Life is full of compromises, right?
Choosing a spouse (other than my perfect wife, of course!) involves accepting imperfections.
Diversification is the same: It's a trade-off.
We need to understand the rationale, the math, and the psychology.
The Multi-Decade Game
If investing is a multi-decade game (which it should be!), the daily or monthly pain of "missing out" on the latest hot stock is almost irrelevant.
Why?
Because we humans are easily manipulated.
Loss Aversion: The Key Psychological Factor
Remember that as humans, we're much more sensitive to losses than gains.
A $100 loss feels twice as painful as the joy of gaining $100!
So, downside protection is even more important than chasing upside.
If you know you're psychologically susceptible to emotional distress from losses, "covering your you-know-what" is paramount.
History Lesson: This Isn't New
Diversification isn't some modern invention.
Ancient Greek and Roman merchants diversified by spreading goods across multiple ships.
Lloyds of London started as a coffee shop where ship owners shared the risk of losses at sea.
"Don't put all your eggs in one basket" is an ancient business necessity.
Market Inefficiency: Crashes Prove It
If markets were truly efficient, we'd have seen the dot-com crash, the 2008 financial crisis, and the pandemic mini-crash coming.
The fact that they blind-sided most people proves markets aren't perfectly efficient.
Negativity Bias, Media Hype, and Market Sharks
We humans have a negativity bias.
We focus on bad news more than good.
The media amplifies this, and then you have "sharks" in the market who use the media to manipulate you into making trades that benefit them.
For example, a billionaire might go on CNBC, cry about how the world is ending, and then reveal they shorted the market, profiting from the panic they created.
Diversification Techniques: It's the Implementation That Matters
Diversification means spreading your dollars over different types of assets.
If one asset crashes, others may protect you.
This means stocks, bonds, and broad market ETFs like the S&P 500.
Here are some points to consider:
Cross-sector diversification: Balance growth stocks with value plays, small caps with blue chips.
Multi-layer defense: Combine stocks, bonds, ETFs, and diversify across sectors (tech, healthcare, consumer staples, etc.). This gives you a smoother ride.
Geographical diversification is foolish: The US economy over the past 100 years is not only overperformed but smashed all other markets. The top 1% of investors in America have 85% of their portfolio in the US market for a reason.
Analogy: The Freeway
Imagine Sam and I have to drive 300 miles. Sam's going to speed like crazy.
If he doesn't crash or get pulled over, he'll get there fast. I'm going to drive like a grandma, following the speed limit.
Sam's ahead of me, but my chances of getting to the finish line safely are much greater.
Diversification is the same.
You might feel left behind, but you're reducing your risk of a catastrophic crash.
The 60/40 Portfolio: Stocks and Bonds Work
Historically, a 60% stock/40% bond portfolio has outperformed a 100% stock portfolio over many time periods.
Why?
Because these asset classes are often inversely correlated, providing insurance during crises.
Recency Bias: The "Jellyfish"
Because stocks have done so well recently, everyone thinks they'll keep going up. This is recency bias. I remember when I went to the island of Kotow in Thailand and I was told that there are jellyfish that if stung, could kill you. However, they said that the jellyfish hasn't been seen in the last 3 years. Even though I was advised against swimming I did not care because of recency bias.
Herd Mentality: Run the Other Way
Be mindful of herd mentality. If everyone is piling into some new "Quantum stock" or cryptocurrency you've never heard of, it's probably a good time to stay far away.
Punch Holes in Your Thesis: Accept You Could Be Wrong
To be a truly diversified investor, you have to accept that you might be wrong about a stock. Most people can't accept that their darling stock (Tesla, Palantir, Nvidia, etc.) could fail.
Did Diversification Fail?
Even in 2008, when "everything" dropped, some asset classes performed much better than others (like US Treasuries). And in less dramatic corrections, a diversified portfolio bounces back quicker.
Two Diversification Strategies:
Individual Stocks: Manually balance your portfolio by mixing and matching individual stocks.
Index Funds: Buy the entire index (like the S&P 500). This is less stressful and less prone to error because the index is constantly updated.
Avoid "Diversification to Death"
Don't over-diversify. Having hundreds of different stocks is pointless.
Key takeaway
The only way diversification makes sense is if you stick with it for 10-15 years.
Short-term diversification is meaningless.
So when your investor says to stay the course, stay.
Conclusion: The Long Game
Diversifying means always saying "I'm sorry" because part of your portfolio will always be lagging.
You won't be a superstar every year.
But you'll have the resilience to weather storms and avoid blowing up your portfolio. It's about the bragging rights in 10 years, not any single year.
Tune out the noise, accept the emotional trade-offs, and remember:
They're sprinting in a marathon, and you're in it for the long haul.
Citations:
Credits : Tom Nash Diverification video